US257384A - Feed mechanism for saw-mills - Google Patents

Description

(ModeL) T. J. REAMY.

' FEED MECHANISM FOR SAW MILLS. No. 257,384. k Patented MayZ, 1882.

N, PETERS, Pnawmm n hur, wllhhlgmn, no.

2 Sheets-Sheet 2.

; ITED STATES PATENT OFFICE. I.

THOMAS J. BEAMY, on ROCKY MOUNT, NORTH CAROLINA.-

FEED MECHANISM FOR SAW MILLS. I

SPECIFICATION formingpart of Letters Patent No. 257,384, dated May 2, 1882. l I Application filed February 2,155 32. (Model) I I I To all whom it may concern:

Be it known that I, THOMAS J. REAMY, of Rocky Mount, in the county of Nash and State of North Carolina, have invented certain new and useful Improvements in Feed Mechanism for Saw-Mills; and I do hereby declare the fol- 'lowin g to be a full, clean-and exact description oftwo face-plates, a laterally-movable shaft which gears with the rack-bar, and which is 'provided with a friction-disk which can-be brought in contact with either one of the face plates. 'The object of this part of my'inventionis to dispense with the usual 'iulleys and beltswhich have heretofore been used for the qiurpo'se of reversing the carriage and to substitute therefor a much cheaper and simpler mechanism.

invention further consists in making the friction diskfwhich-is secured to the shaft which operatesthecarriage, movableback-and forth, so that'it can be brought in contact with either one of the face-plates, neartheir centers or out toward their outer edges,for the purpose of increasing or decreasing the speed at which the carriage is movethand thus produce a universal feed movement. The object of this part of my invention is to enable the operator to regulate the speed at which the carriage shall be moved back, and thus enable the operator to always keep the carriage under the most perfect control.

My invention still further consists in journaling the shaft which operates the carriage back and forth in pivoted or movable boxes. The object of this part of my invention is to enable the shaft to be moved laterally and to change its boxes at the same time with it, so that they will always be in a directline, and thus prevent binding.

My invention still further consists in plac ing the supports for the inner end of the shaft which operates the carriage and for the lever directly upon the mandrel in between the two face-plates. The object of this part of my in vention is to enable my apparatus to be applied to any of the saw-mills now in use without having to placeany false timbers under the mandrel.

,Figure l. 'is a plan view of my invention;

Figs. 2 and 3 are views taken from opposite ends. Fig.elisaverticalsection,takenthrough the mandrel. Fig. 5 shows detail views of the boxin g.

,A represents a suitable frame-work, which may be of any construction that may be preferred, and B is the maudrehwhich is journaled upon its top. To this mandrel. are secured the two face-plates G D, of which the one, C, is considerably the larger, and is to be used for the purpose of reversing the carriage and giving a faster motion to it than will be given by the smaller faceplate D, which feeds the lumber forward to the saw. These two faceplates are parallel with each other and separated just sufficiently farapart t6 enable the friction-disk E, which is secured to the shaft- G, to bavea slight play back and forth between t hem,so that the'disk can be brought in contact with .eitherone of the faceplates without touching the other, or can be placed midway between thc'two without touching either one. Thisshaft G is provided with afeathcr, and the friction-disk is made adjustable back and forth upon the shaft, so that it can be moved inward toward the mandrel, and then' be made to bear against the inner portion of" the face-plate D when but a very slow feed is required for the carriage. .Upon theoutcr end of this shaft Gis secured the beveled gear or other similar device, H, by which the shaft is made. tomesh with the rack which drives the carriage back and forth. As the shaft G must be given a lateral play, so as to shift the friction-disk horizontally back and forth between the two-faee-plates, both of the boxes H, on which it is journaled,- *are supported in their bearings by means of the two set-screws I, or a set-screw at one end, and a suitable pointed projection, which will catch in a recess in the bearing at the other. By means of this construction the boxes can turn in their supports at the same time that the shaft is moved laterally, and thus be always kept directly in line with'the shaft, whereby binding is prevented.

The support for the box at theonter end of the shaft will be secured to one of the main timbers of the frame either as here shown or in any suitable manner that may be preferred. The support for the inner end of the shaft G is formed by the rocking lever L, which is pivoted near its center upon a suitable bearing, which is supported directly upon the mandrel in between the two face-plates by means of the two boxes N. These boxes orjournals are made in two pieces, so that they can be bolted around the mandrel, and upon their-upper ends is secured the guide and support 0. This guide and support has its lower end slotted where the clamping-bolts pass through down into the boxes N, so that the boxes can be adjusted -claiml. The combination of mandrel 13, having se-- back. and forth. upon the mandrel, andthus secured: any desired distance apart. Passing through the upper end of this guide and support 0, which is braced in position by the rod .P,ii s the grooved sliding operating-lever Q, byv means of which the friction-disk is shifted backand forth between the two face-plates. This lever Q, which has both a rotary and a sliding movement, has connected to it the cam -R, which catches between the upper end of theleverL, and as the lever Q is rocked back andforth the lever L is moved at the same time. As the lower end of this lever has the boxfor' the innerend of the shaft Gr pivoted in it,,whenever the lever is moved by the cam theufrictiondisk is moved laterally.

The-cam for operating the lever L has a feather formed on its inner side, and this feather catches in'the groove of the operating-lever for: the purpose of allowing the lever'to slide back'audforth without earryin g the cam with it. The cam is secured in place by havinga flange lformed upon its edge. and this flange, catches between the support 0 and the lever L.

Secured to the operating-lever by means of a set-screw at any suitable pointisaelutch, T,

which catches in a groove made in the frictiondisk,.andby which the disk is moved back andzforth upon the shaft G when the operating-lever-is moved horizontally.

Bysecuringthe two boxes N directly to the mandrel, as is here shown, there will be DOUG-v the-shaft G, andhencethe apparatus ean-abe appliedato anyof'the saw-mills nowinv KUSB Bydis'pensin g with theusual cone=pulleyshere+x= tofore generally .used not only is .the: cost of the machineagreatly cheapened, butthe use of belts, which are liable to constant breakage, is done away with; and should one of the cones be fuller than the other the shaft is moved horizontally more or less on that end, whereby the saw is caused to stand ataslight angle, and hence will wabble and heat while in operation. By placing the two boxes N between the two face-plates and directly upon the mandrel, as is here shown, any strain upon the op crating-lever is divided directly between .the two, so that there will not be the slightest strain upon the mandrel, which will cause the saw t9 get out of true.

Having thus described my invention, I

cured to it the two face-plates D O, of unequal 1' size, the friction-diskE, and the shaft -G,zto-= which the disk is secured, and upon which the disk slides back and forth, substantially-asshown.

p 2. Thecombination ofthemandrelB, having secured to it the two face-plates D (J, the disk E,

substeu itially as described.

.the shaft G, and the rod Q, provided with thew 3. The combination of the mandrel B,.the

tace-platesC D, the disk E, and shaft G,-hav-.

4. In a saw-mill, the combination of the man drel, the two-face-plates, the boxes N, support-v ed direct-1y upon the mandrel, the support P, the lever L, shaftG, provided with the frietion-' disk, and the endwise-operating lever,-whereby-thefriction-disk is moved both back and laterally, substantially as specified;

vforth upon the shaft and the shaft is moved 5. The combination of the mandrel B, faceplates 0 D,'disk E, shaftGr, journaled-in piv-.

oted-aboxes, lever L, and rod Q provided with a clutch and cam, substautially as shown. In testimony whereof I afiix my signature in presence of two witnesses. cessity. of having :to secure false-timbers to the frame toact as a support for the :boxi-ngnfor 1 T.'J. RE'AMY.

Witnesses-:-

W. H .2 KERN, W. W. MORTIMER.--

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